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Home Q & A Board Science-Related Homework Help Physics
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Smoren Smoren
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11 years ago
A projectile is fired horizontally with an initial speed of 50.0 m/s. Neglect air resistance.

What is the magnitude of the displacement of the projectile 3.00 s after it is fired?
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wrote...
#1
11 years ago
Set up your problem as a multiplication.  What is the unit of the product?  

If the unit(s) of the answer make sense, you set up the problem correctly.
wrote...
#2
11 years ago
idk
wrote...
#3
11 years ago
The block is 50 m/s * 3 s = 150 m horizontally

d = 0.5AT^2
d = 0.5 * 9.8 * 3^2
d = 4.9 * 9
d = 44.1 m Vertically

Hypotenuse of that triangle is the displacement
 

x^2 + y^2 = D^2
150^2 + 44.1^2 = D^2
22,500 + 1944.81 = D^2
D^2 =24,444.81
D = 156.34 m   Answer
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